We know everyone is waiting for the Android 5.0 Lollipop update for Sony Xperia devices, but while we wait you may want to try and download these new Flat Xperia Themes designed by XDA-developer MixaDJ. Various colours are available to try including Black, Blue, Deep Purple, Green, Red and Teal. These are nice clean Xperia Themes and well worth a download. The download link below includes APKs for all colours and root is not required.
DOWNLOAD APK: Xperia Flat Theme (various colours)
DOWNLOAD APK: Xperia Flat Wallpapers (various colours)